Suboccipital Triangle Flashcards
What are the 3 triangles of the neck?
Suboccipital
Anterior
Posterior
What are the boundaries of the suboccipital triangle
Medial: Rectus capitis posterior major
Lateral: Obliquus capitis superior
Inferior: Obliquus capitis inferior
What are the boundaries of the anterior triangle
Medial: Sternothyroid and thyrohyoid muscles
Lateral: Anterior border of the sternocleidomastoid
Superior: Posterior belly of digastic
What are the boundaries of the posterior triangle?
Medial: Posterior border of the sternocleidomastoid
Lateral: Meidal border of the trapezius
Inferior: Clavicle
Suboccipital nerve vs. greater occiptial nerve
Suboccipital nerve comes off the dorsal ramus of C1 and is motor only
Greater occipital nerve comes off the dorsal ramus of C2 and is motor and sensory
Which muscle(s) extend the neck?
Rectus capitis minor and major
What muscle(s) rotate the neck/head?
Rectus capitis major
Obliquus capitis inferior
Which muscle(s) laterally bend the neck?
Obliquus capitis superior
All suboccipital muscles are innervated by
The suboccipital nerve
Major function of the suboccipital triangle?
Fine-tuning the skull’s position